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"""Unit test for KNX/IP RoutingLostMessage objects."""
import pytest
from xknx.exceptions import CouldNotParseKNXIP
from xknx.knxip import KNXIPFrame, RoutingLostMessage
class TestKNXIPRoutingLostMessage:
"""Test class for KNX/IP RoutingLostMessage objects."""
def test_routing_lost_message(self) -> None:
"""Test parsing and streaming RoutingLostMessage KNX/IP packet."""
raw = bytes((0x06, 0x10, 0x05, 0x31, 0x00, 0x0A, 0x04, 0x00, 0x00, 0x05))
knxipframe, _ = KNXIPFrame.from_knx(raw)
assert isinstance(knxipframe.body, RoutingLostMessage)
assert knxipframe.body.device_state == 0
assert knxipframe.body.lost_messages == 5
routing_lost_message = RoutingLostMessage(lost_messages=5)
knxipframe2 = KNXIPFrame.init_from_body(routing_lost_message)
assert knxipframe2.to_knx() == raw
def test_from_knx_wrong_lost_message_information(self) -> None:
"""Test parsing and streaming wrong RoutingLostMessage (wrong length byte)."""
raw = bytes((0x06, 0x10, 0x05, 0x31, 0x00, 0x0A, 0x06, 0x00, 0x00, 0x05))
with pytest.raises(CouldNotParseKNXIP):
KNXIPFrame.from_knx(raw)
def test_from_knx_wrong_lost_message_information2(self) -> None:
"""Test parsing and streaming wrong RoutingLostMessage (wrong length)."""
raw = bytes((0x06, 0x10, 0x05, 0x31, 0x00, 0x0A, 0x04, 0x00, 0x00))
with pytest.raises(CouldNotParseKNXIP):
KNXIPFrame.from_knx(raw)
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